Haldia experiences a subtropical climate with mild winters and hot summers. Winters, from December to February, are cool with temperatures ranging from 12-37°C, making it the coolest period of the year. Spring months of March to May bring gradually warming temperatures, peaking at an average high of 39°C in April and May. The summer months, June to September, see a slight drop in temperature, averaging around 29-30°C, with August being the coolest month. Autumn, from October to November, sees a gradual cooling down of temperatures, returning to cooler winter conditions by December.